Process simulation and modeling for gas processing plant

  • Falah Obaid Kenish Mubarak Alhameli

Student thesis: Master's Thesis

Abstract

Natural gas is one of the major energy sources and its demand is increasing rapidly due to its environmental and economic advantages over other fuels. Gas processing is an essential component of natural gas system. In this work, gas processing plant is introduced with the objective of meeting pipeline gas quality. It consists of separation, sweetening and dehydration units. The separation unit contains phase separators along with stabilizer (conventional distillation column). The sweetening unit is an amine process with MDEA (Methyl DiEthanol
Amine) solvent. The dehydration unit is glycol absorption with TEG (TriEthyleneGlycol) solvent. ProMax® 3.2 was used to simulate the plant. Box-Behnken design was applied to build a black-box model using design of experiments (DoE). Minitab® 15 was used to generate and analyse the design. The chosen variables for the model were 10. They represent the gas feed
conditions and units’ parameters. The total runs were 170. They were successfully implemented and analysed. Total energy of the plant and water content for the product gas models were obtained. Case study was conducted to investigate the impact of H2S composition increase in the feed gas. The models were used for the case study with the objective of total energy minimization and constraint of 4 lb/MMscf for water content in the product gas. Lingo 13 was used for the optimization. It was observed that the feed pressure had the highest influence among the other parameters. Finally, some recommendations were pointed out for the future works.
Date of AwardFeb 2013
Original languageAmerican English
SupervisorAli Almansoori (Supervisor)

Keywords

  • Applied sciences, Gas separations, Natural gas--geology, Process simulation and modeling for gas processing plant, Separation technology., Chemical engineering, Energy, 0542:Chemical engineering, 0791:Energy

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